Pipe joint



June 15,, 1937. Q T w 7 2,083,970

PIPE JOINT Filed Jan. 6, 1936 2 Sheets- Sheet l 36 T? g 28 5 a 33 35 i;26

j 2 .5 11 I 29 3o 4 14 34 J .1; 19

(Var/e12." iVdZzer INVENTOR W T N f 6' J ATTORNEY June 15, 1937. c. T.WALTER 7 2,083,970

PIPE JOINT Filed Jan. 6, 1936 2 Sheets-Shae; 2

INVENTOR ATTORNEY Patented June 15, 19 37 PIPE JOINT Charles T. Walter,Chicago, 111., assignor to Km 1 dustrial Patents Corporation, Chicago,Ill, a corporation of Delaware Application January 6, 19st, Serial No.57,687

11 Claims. (c1. 285-9) j This invention relates to an improved pipeoint.

One of the objects of this invention is to provide an improved pivotalpipe joint of the unidirectional type which will operate at maximumefliciency under heavy pressures.

Another object of this invention is to provide a pivotal pipe joint ofthe uni-directional type which will operate with a minimum of frictionunder heavy pressures.

Another object of this invention is to provide an improved pipe joint ofthe uni-directional type pivotal on a central spindle utilizing anantifriction bearing. Other objects will be apparent from thedescription and claims which follow.

In the accompanying drawings, similar reference characters in theseveral figures designate similar parts. Figure 1 is a side elevationalview illustrating one embodiment of my invention. In this view the inletand outlet means are shown pivoted substantially 90.

' Figure 2 is a transverse view, partly in section, of the pipe jointillustratedin Figure 1.

In this view, the inlet and outlet means are'shown pivoted substantially180. j

Figure 3 is an end view illustrating another embodiment of the pipejoint shown in Figure 1.

' Figure 4 is a top view of the pipe joint as shown in Figure 3. I

Figure 5 is a transverse view, partly in section,

of Figure 3. This figure may also be considered as a view taken on line5-5 of Figure 4.

Figure 6 is a transverse view, partly in-section,

of Figure 4. This figure may also be considered as a view on line 3-3 ofFigure 3.

Referring now to the embodiment of my invention illustrated in Figures 1and 2 of the drawings.

The pipe joint, broadly indicated by the nu-" meral Leomprises astationary casing 2 and oscillating casing 3. Casing 2 isradiallyenlarged atl to provide channelway 5, from which lat- 46 erally extendscircular boss 6 interiorly threaded at 'l for the reception of inletline 8. Casing 2, at one end, is provided with threaded opening 9 forthe reception of adjustment bolt 10 and at its opposite end is recessedto provide packing a 50 chamber H. The inner walls l2 and I3 of casing 2are machined for the reception of tubular bush ing l4 of suitablematerial having a pressed fit therein. r

Casing 3 is divided by wall 15 to form material 55 chamber i 8 andbearing chamber l1. Casing 3,

like casing 2, is radially enlarged at l6 to form said channelway I 8,from which extends lateral boss l9 having an interiorly'threaded opening20 for the reception of outlet line 2!. The inner walls 22 and 23 ofcasing 3 are machined to pro- 5 vide bearing surfaces in slidableengagement with bushing l4. Casing 3, at one end, is provided withmachined peripheral flange 24 having a sliding fit within recess ll ofeasing 2 and at the opposite end with exteriorly threaded flange 10 25',upon which is secured cap 26.

Bushing I4 is provided with a plurality of lateral ports 21 and 28communicating with channelways 5 and I8, respectively.

Wall i5 is recessed at.29, in which is pressed 15' fixed race 30 ofbearing member '3i, which hearing member is preferably of the ballbearing anti-frictional type. Race 32 of bearing 3! is held in positionby head 33 of bolt iii.

In assembling the pipe joint illustrated in Figtires 1 and 2 of thedrawings, bushing I4 is pressed within casing 2 and packing rings 34inserted within packing chamber ,ll around bushing I4. Casing 3 is'thenplaced upon bushing l4 with flange member 24 directed within pack ingchamber H. Bolt H1 is passed through suitable openings' in bearing 3|and wall l5 and threaded within opening 9 of'casing 2. Bolt It! servesas a pivotal member between casings 2 and 3 and also provides means forwedging flange 30 24 against packing rings 34 toprevent leakageof-material at the pivotal connection between the several casings. Cap23 secured on threaded flange 25 serves to seal bearing chamber i1against dirt and grit as well as'means for packing grease or otherlubricant around bearing member 3!. End 35 of bolt I0 is provided withflats 36 as a wrench gripping means by which bolt I0 may be exteriorlyadjusted from time to time to compensate for wear of packing rings 34.40

In use, plastic, semi-liquid or liquid materials may. be forced underheavypressures through line 8 into channelway 5 of easing 2. Materialentering channelway 5 will pass through'ports 21 and follow the interiorof bushing l4 to ports 28 whence it will passthrough ports 28 into'channelway iii of easing 3 and through outlet line 2|. At the free endof line 2i, an extrusion nozzle or other forming or spraying means maybe provided.

By reason of the bearing surfaces'of the ma.- chined faces 22 and 23 ofeasing 3 against bushing l4 and bearing member 3| in engagement flats85, which serve as in Figures 3 to 6' of the drawings illustrates a pipejoint of the uni-directional type having universal movement, in whichlike numerals are used to designate similar parts common to theembodiment illustrated in Figures 1 and}. In the joint shown in Figures3 to 6, column 31 extends substantially at right angle to casing 2 andis radially enlarged at 33 to provide channelway 39 communicating withchannelway is through opening 4|).

Referring nowfmpre particularly to Figure 5, column 31, similar tocasing 3, is divided by wall 4| to form chamber 42 and bearing chamber43, the bearing chamber member 44, exteriorly threaded at its outer endfor the reception 0! cap 45. I i Chamber 42 is centrally bored andmachined at its inner faces 45 and 41 for the reception of bushing 43rotatably fitted therein. Chamber 42 is recessed at its open end todefine packing chamber 49.

The end of bushing 43 inserted within" chamber 42 is sealed except forthreaded opening for the reception of pivotal bearing bolt 5| Theopposite end of bushing 48 is open and is interiorly threaded at 52,from which extends outlet line 53. At its open end, bushing 43 isexteriorly enlarged at 54 to slidably fit within packing chamber 43. Q

Shoulder of enlargement 54 serves to wedge packing rings 55 withinpacking chamber 49 as the bushing 43 is drawn bolt 5|. A plurality oilateral ports 51 are provided in bushing 43 adjacent channelway 3,8 toadmit product from channelway 39 to the interior oi bushing 48 whence itis passed through outlet line 53. Wall 4| of bearing chamber 43 isrecessed at .53, in which is pressed stationary race 55 of bearingmember 50. Bearing member 45 is preferably of the anti-frictional ballbearing type comprising open race members 59 and 8| for carrying aplurality of ball bearings. 52. Race BI is held in position byenlargement 53 of bearing bolt 5|.

Cap 45 is secured on threaded flange 44 and serves to seal bearingchamber 43 against dirt and grit, as well as a means for packing greaseor other lubricant around bearing member 50.

Cylindrical portion 54 of bolt I0 is closely fitted in opening 55 of cap45 by which bearing chamber 43 is substantially sealed at that pointwithout loss of movement to bolt l0. 1

Bearing bolt 5| at its outer end is provided with an exterior wrenchgripping means for taking up on' bushing 48 from time to time tocompensate the wear of packing rings 55 in packing chamber 49,

In practice, outlet line 53 may be equipped at its free end with anextrusion nozzle or other plastic forming means.

In assembling the joint illustrated in Figures 3 to 6 of the drawings,bushing i4 is pressed within casing 2 and packing rings within packingchamber around bushing |4. Casing'3 is placed upon bushing with flangemember 24 directed within packing chamber Bolt I0 is passed throughsuitable openings in bearing 3| and wall I5 and thre'adedwithin opening9 of easing 2. Bolt Hi serves as a pivotal member between casings2 and 3and also provides means for wedging flange 24 against packing rings 34to preventleakage of material at 43 being defined by flange withincolumn 31 by 34 inserted the pivotal connection between the severalcasings. Bearing chamber I1 is sealed by ,means of cap 25.

Packing rings 55 are from the small end and the bushing 43 insertedwithin column 31. Bearing member secured within bearing chamber 43 andbolt 5| passed therethrough and threaded within opening 50 of bushing43. Bushing 4! is drawn by bolt 5| within column 31 to sumciently wedgepacking rings 56 in packing chamber 43 and prevent leakage ot materialtherearound.

In operation, plastic, semi-liquid material under pressure from line 8will enter channelway 5 to pass through ports 21 to the interior ofbushing l4 and through ports 23 into channelway II. From channelway l3,the material is directed through opening 40 into channelway 35, thencethrough ports 51 to the interior of bushing 43 and through outlet line53. 1

It will be seen that by reason of the pivotal movement of easing 3 inrelation to casing 2 and of bushing 43 in relation to column 31, outletline 53 is capable of movement in either direction in relation to inletline 3,

' It will be seen that by reason 0! the bead surfaces of machined faces22 and 23, and 43 and 41, andthat due to the use of anti-frictionbearing members 3| and 5|), casing 3 will oscillate with respect tocasing 2 and likewise bushing 43 with respect to column 31 with aminimum- 01 iriction regardless oithe pressure used.

My improved pipe joint is especially adapted for use with heavyhydraulic pressure. It will be understood, however, that such use ismerely by way of illustration and not by way of limitation, since theinvention may be used to an equal advantage whether the material bepassed therethrough by gravity or forced by compressed air or steam.

I claim:

l. A pipe joint of the class described comprising a casing having aninlet, a second casing pivotal on said first mentioned casing having anoutlet, a bushing extending from one casing to the other and having apress fit within one oi said casings and a slidable fit within the otherof said casings, said bushing providing bearing surfaces for themovement of said pivotal casing and a pivotal bolt member for securingsaid pivotal casing on said bushing.

2. In a pipe joint of the class described, a casving having a radialenlargement to channelway therein, a lateral inlet to said channelway, asecond 'casing pivotal on said first mentioned casing having a radialenlargement to provide a channelway therein, a lateral outlet from saidlast mentioned channelway, a tubular bushing extending-from one casingto the other and having a press fit within one oi. said casings and aslidable fit within the other of said casings, said bushing providingbearingsurfaces for the movement of the pivotal casing and a conduitbetween said channelways, lateral ports in said bushingadjacent each ofsaid channelways and a pivotal bolt member passing between said casingsfor securing the pivotal casing on said bushing.

placed on bushing 43' 53 is next provide a 3. In a pipe joint of theclass described inbushing passing between said casings having 1 meansfor securing said casings on said bushing, acolumn extending from saidsecond casing in angular relationship therewith, a radial enlargementproviding a channelway within said column, a passageway between thechannelways of said column and said second casing, a bushing having aclosed end and an open end serving as an 'outlet pivotally securedwithin said column, lateral ports in said last mentioned bushingcommunicating with the channelway ofsaid column and a pivotal memberbetween said column and the'closed end of said last mentio'ned bushing;

4. A pivotal pipe joint comprising a casing having an inlet, a second.casing having an outlet and adapted for pivotal movement relative tosaid first mentioned casing, -a tubular bushing having a press fit inone of said casings and a slidable fit in the other of said casings andproviding bearing surfaces for the pivotal movement thereof and aconduit between said inlet and said outlet, ports in saidbushingadjacent said inlet and said outlet, a pivot member connecting theseveral casings and an anti-friction bearing member between said pivotmember and one of said casings.

5. A pivotal pipe joint comprising a fixed column having a lateral inletand an open end annularly recessed to provide a packing chamber, packingin said chamber, a tubular bushing pivotally mounted within theopen endof said column and provided with lateral ports adjacent said inlet andan annular enlargement registrable with said chamber .and an adjustablepivot member for pivotally securing said bushing in said column withsaid annular enlargement in wedging relationship with the packing insaid chamber.

6. In a pivotal pipe joint including a casing having an inlet, a secondcasing adjacent and pivotal on said first mentioned casing and means forpivotally securing said casings, a fixed column angularly extending fromsaid second casing and open at one end, a passageway between said secondcasing and said column, a tubular bushing pivotally mounted within theopen end of said column and provided with ports adjacent saidpassageway, a packing chamber between said column and said bushing andan adjustablepivot member for pivotally securing said bushing in saidcolumn in wedging relationship with said packing in said chamber.

7. ,In a pivotal pipe joint includinga casing having an inlet, a secondcasingadjacen't and pivotal on said first mentioned casing and means forpivotally securing said casings, a fixed column angularly extending fromsaid second casing and open at one end, a passageway between said secondcasing and said column, an annular recess-in the open end of said columnproviding a tubular bushing pivotally mounted through the open end ofsaid column and provided with lateral ports adjacent said passageway andan annular enlargement registrable with chamber and an'adjustable pivotmember for pivotally securing said bushing in said column a packingchamber, packing in said chamber,

said

with said annular enlargement in wedging rela- 1 tionship with thepacking in said chamber.

- 8. A' pivotal pipe joint of the class described comprising a casinghaving an inlet and a second casing pivotally mounted on the firstcasing and having an outlet, a tubular bushing extending through both ofthe casings and providing bearing surfaces for the pivotal movement ofthe casings thereon and a conduit between the inlet and the outlet,ports in the bushing adjacent the inlet and outlet for the passage ofmaterial therebetween and means for securing together the casings'andbushing.

9. A pivotal pipe joint of the class described comprising a casinghaving an inlet and a sec ond casing pivotally mounted on the firstcasing and having an outlet, a tubular bushing extending through both ofthe casings and providing bearing surfaces for the pivotal movement ofthe casings thereon and a conduit between theinlet and the outlet, portsinthe bushing adjacent the inlet and outlet for the passage of materialtherebetween and means including a a tubular bushing extending throughboth of the casings and providing bearing surfaces for the pivotalmovement of the casings thereon and, a conduit between the channelways,ports in the bushing adjacent the channelways for the passage ofmaterial therebetween and means for securing together the casin'gs andbushing.

11. .A pivotal'pipe joint of theclass described comprising a casinghaving a lateral outlet and an open end annularly recessed to provide apacking chamber, packing in said chamber, a second casing having .alateral outlet and an open end'pivotally mounted reative to the open endof the first casing, the open end of the sec- 0nd casing being annularlyflanged for registry with the chamberof the first mentioned casing,

a tubular bushing extending through both of the,

casings and providing bearing surfaces for the pivotal movement thereofand an outlet between the inlet and-the outlet, ports in the bushingadjacentthe inlet and outlet for the passage of' material therebetweenand means for securing together the casings and bushing with the flangeof the second casing in wedging relation with the packing in the recessof the first casing. f CHARLES T. WALTER.

